Antioxidant activity of procyanidin-containing plant extracts at different pHs

Wood, Jackie E; Senthilmohan, Senti T.; Peskin, Alexander V.

doi:10.1016/s0308-8146(01)00329-6

Cited by 124 publications

(78 citation statements)

References 22 publications

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“…The method of Wood, Senthilmohan and Peskin (2002) was used for the determination of total phenols. A volume of 2.5 ml of Folin-Ciocalteu reagent diluted to one-tenth was added to 30µl of the extract.…”

Section: Spectrophotometric Determination Of Total Phenolsmentioning

confidence: 99%

“…Nonetheless this uncanny result, it doesn't mean the fresh pulp has no polyphenols effectively. In fact, even though the polyphenols, belonging to cell vacuoles, are said to be water soluble, Wood et al (2002) recalled that some flavonoids can bind to proteins. Moreover, they came to the point that basic medium (pH=8) is potent than distilled water and acidic medium as solvents for polyphenols extraction.…”

Section: Total Phenolsmentioning

confidence: 99%

“…In fact, at high drying temperature, the covalent bound in phenolic compounds can be cleaved (Lohani & Muthukumarappan, 2015). Many authors reported that an increase drying temperature leads to an increase total phenolic extract (Wood et al, 2002;Jeong et al, 2004;Ruenroengklin et al, 2008;Madrau et al, 2009). However, Rajha et al (2014) mentioned that, at high drying temperature, when the product reaches a constant weight, meaning it can't release any more water, we should stop heating; otherwise the excessive heat leads to a degradation of polyphenols.…”

Section: Total Phenolsmentioning

confidence: 99%

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Drying Temperature Effect on Total Phenols and Flavonoids Content, and Antioxidant Activity of Borassus aethiopum Mart Ripe Fruits’ Pulp

Tiho¹,

Yao²,

Brou³

et al. 2017

JFR

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We assessed the total phenols content (TPC) by Folin-Ciocalteux method, total flavonoids content (TFC), and antioxidant activity (AOA) using ABTS radical cation of Borassus aethiopum Mart ripe fruits; uniquely its pulp was considered. Fresh and dried at 40, 50, 60, 70 and 80 o C pulps were analyzed, through maceration and decoction, and distilled water (DW), aqueous acetone (DW+Aceto, DW/acetone, 30/70, v/v) and aqueous methanol (DW+Meth) prepared in the same way were used. Though 80 o C product extracted through decoction delivered the highest extracts of TPC with DW, DW+Aceto and DW+Meth, 654.434, 780.066 and 729.934 mg GAE/g respectively; we could not retain it as the best. Very likely, the sugars were caramelizing and the derived product had an intense brown color. Whereas, at 70 o C, TPCs were 447.866, 337.334 and 327.066 mg GAE/g, respectively, by decoction and in the same above solvents order. The best extract obtained with DW was statistically different from that of DW + Aceto and DW + Meth, which were not significantly different from each other, with Duncan least squares means comparison test in a confidence interval of 99%. The corresponding TFCs and AOAs were (59.34, 68.34, and 51.66 mg QE/g) and (0.4404, 0.52088, and 0.6524 µmol TE/g). The flour has a nice chocolate color. Except 60 o C, an increase of the drying temperature leaded to a rising amount of TPC. Taking each factor, the extraction mode and drying temperature were main effects for extracts (p< 0.0001). The overall regression analysis showed significant correlation coefficient between TPC and AOA, with R 2 =0.8394.

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Section: Spectrophotometric Determination Of Total Phenolsmentioning

confidence: 99%

Section: Total Phenolsmentioning

confidence: 99%

Section: Total Phenolsmentioning

confidence: 99%

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Drying Temperature Effect on Total Phenols and Flavonoids Content, and Antioxidant Activity of Borassus aethiopum Mart Ripe Fruits’ Pulp

Tiho¹,

Yao²,

Brou³

et al. 2017

JFR

View full text Add to dashboard Cite

show abstract

“…Total polyphenol content in the extracts was determined with colorimetry by using the Folin-Ciocalteu method (Wood et al, 2002). Briefly, 2.5 mL diluted Folin-Ciocalteu reagent (10%, v/v) was mixed with 200 μL of sample.…”

Section: Determination Of Total Polyphenol Contentmentioning

confidence: 99%

Extraction optimization of polyphenols, antioxidant and xanthine oxidase inhibitory activities from Prunus salicina Lindl.

Peng

Chen

et al. 2016

Food Sci. Technol

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Dptimization of polyphenols extraction from plum (Prunus salicina Lindl.) was evaluated using response surface methodology. The Box-Behnken experimental results showed the optimal conditions involved an extraction temperature of 59 °C, a sonication time of 47 min, and an ethanol concentration of 61% respectively. The maximum extraction yield of total polyphenols was 44.74 mg gallic acid equivalents per gram of dried plum at optimal conditions. Polyphenol extracts exhibited stronger antioxidant activities than V c by evaluating of 1,1-diphenyl-2-picrylhydrazyl (DPPH) and hydroxyl radical scavenging activity. Furthermore, polyphenol extracts (IC 50 = 179 g/mL) showed obvious inhibitory effects on xanthine oxidase. These findings suggest that polyphenol extracts from P. salicina can be potentially used as natural antioxidant and xanthine oxidase inhibitory agents.Keywords: Prunus salicina Lindl.; polyphenols; response surface methodology; antioxidant activities; xanthine oxidase inhibitory.Practical Application: P. salicina polyphenols can be potentially used as natural antioxidant and xanthine oxidase inhibitor.

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“…Enzogenol has marked superoxide radical scavenging activity in vitro and is a more effective antioxidant than vitamin C, trolox, catechin, and grape seed extracts (Wood et al, 2002). Enzogenol in combination with vitamin C can significantly reduce the oxidation of proteins and DNA (Senthilmohan et al, 2003), and a clinical trial of this combination successfully reduced systemic plasma protein oxidation to significantly lower levels than vitamin C alone (Young et al, 2006).…”

Section: Immunomodulatory Effects Of Pbes Antioxidant Function and Frmentioning

confidence: 99%

Pine Bark Extracts: Nutraceutical, Pharmacological, and Toxicological Evaluation

Jiao

Zhang

et al. 2015

J Pharmacol Exp Ther

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Proanthocyanidins are among the most abundant constituents in pine bark extracts (PBEs). This review summarizes medical research on PBEs from Pinus pinaster, Pinus radiata, Pinus massoniana, and other less well characterized species. The precise mechanisms of the important physiologic functions of PBE components remain to be elucidated, but there is evidently great potential for the identification and development of novel antioxidant, anti-inflammatory, cardiovascular, neuroprotective, and anticancer medicines. Although toxicological data for PBEs are limited, no serious adverse effects have been reported. PBEs, therefore, may have potential as nutraceuticals and pharmaceuticals and should be safe for use as food ingredients.

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Antioxidant activity of procyanidin-containing plant extracts at different pHs

Cited by 124 publications

References 22 publications

Drying Temperature Effect on Total Phenols and Flavonoids Content, and Antioxidant Activity of Borassus aethiopum Mart Ripe Fruits’ Pulp

Drying Temperature Effect on Total Phenols and Flavonoids Content, and Antioxidant Activity of Borassus aethiopum Mart Ripe Fruits’ Pulp

Extraction optimization of polyphenols, antioxidant and xanthine oxidase inhibitory activities from Prunus salicina Lindl.

Pine Bark Extracts: Nutraceutical, Pharmacological, and Toxicological Evaluation

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